UNKNOWN NVD
CVE-2026-98089
In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix uninitialized transport header access in alb_determine_nd() alb_determin
In the Linux kernel, the following vulnerability has been resolved:
bonding: alb: fix uninitialized transport header access in alb_determine_nd()
alb_determine_nd() uses icmp6_hdr(skb) to inspect ICMPv6 headers.
However, in xmit paths (e.g. packets sent via AF_PACKET / raw sockets
or forwarded packets), skb->transport_header is not guaranteed to be
initialized. While pskb_network_may_pull() ensures the packet data is
linear starting from the network header, it does not set or adjust the
transport header offset.
Dereferencing icmp6_hdr(skb) can therefore access out-of-bounds memory.
Fetch the icmp6hdr directly after ipv6hdr following pskb_network_may_pull(),
and reload ipv6hdr in case pskb_may_pull() reallocated skb->head.
Also remove the unused bond argument from alb_determine_nd().
References
- https://git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2
- https://git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296
- https://git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9
- https://git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bf
This unknown severity vulnerability was published on 2026-09-25 via NVD.
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